mlx4_en: Added self diagnostics test implementation

The selftest includes 5 features:
1. Interrupt test: Executing commands and receiving command completion
   on all our interrupt vectors.
2. Link test: Verifying we are connected to valid link partner.
3. Speed test: Check that we negotiated link speed correctly.
4. Registers test: Activate HW health check command.
5. Loopback test: Send a packet on loopback interface and catch it on RX side.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/mlx4/mlx4_en.h b/drivers/net/mlx4/mlx4_en.h
index edf6523702c0..a09598b2b12e 100644
--- a/drivers/net/mlx4/mlx4_en.h
+++ b/drivers/net/mlx4/mlx4_en.h
@@ -45,6 +45,7 @@
 #include <linux/mlx4/cq.h>
 #include <linux/mlx4/srq.h>
 #include <linux/mlx4/doorbell.h>
+#include <linux/mlx4/cmd.h>
 
 #include "en_port.h"
 
@@ -139,10 +140,14 @@ enum {
 
 #define SMALL_PACKET_SIZE      (256 - NET_IP_ALIGN)
 #define HEADER_COPY_SIZE       (128 - NET_IP_ALIGN)
+#define MLX4_LOOPBACK_TEST_PAYLOAD (HEADER_COPY_SIZE - ETH_HLEN)
 
 #define MLX4_EN_MIN_MTU         46
 #define ETH_BCAST               0xffffffffffffULL
 
+#define MLX4_EN_LOOPBACK_RETRIES        5
+#define MLX4_EN_LOOPBACK_TIMEOUT        100
+
 #ifdef MLX4_EN_PERF_STAT
 /* Number of samples to 'average' */
 #define AVG_SIZE                        128
@@ -356,6 +361,12 @@ struct mlx4_en_rss_context {
         __be32 rss_key[10];
 };
 
+struct mlx4_en_port_state {
+        int link_state;
+        int link_speed;
+        int transciver;
+};
+
 struct mlx4_en_pkt_stats {
         unsigned long broadcast;
         unsigned long rx_prio[8];
@@ -404,6 +415,7 @@ struct mlx4_en_priv {
         struct vlan_group *vlgrp;
         struct net_device_stats stats;
         struct net_device_stats ret_stats;
+        struct mlx4_en_port_state port_state;
         spinlock_t stats_lock;
 
         unsigned long last_moder_packets;
@@ -422,6 +434,8 @@ struct mlx4_en_priv {
         u16 sample_interval;
         u16 adaptive_rx_coal;
         u32 msg_enable;
+        u32 loopback_ok;
+        u32 validate_loopback;
 
         struct mlx4_hwq_resources res;
         int link_state;
@@ -530,6 +544,11 @@ int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
                            u8 promisc);
 
 int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset);
+int mlx4_en_QUERY_PORT(struct mlx4_en_dev *mdev, u8 port);
+
+#define MLX4_EN_NUM_SELF_TEST   5
+void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf);
+u64 mlx4_en_mac_to_u64(u8 *addr);
 
 /*
  * Globals